***NOTE***, DUE TO AVAILABILITY, THE KIT MAY COME WITH REGULATOR WITH NO PRIMER***APPLICATION: LOW PRESSURE PROPANE/NATURAL GAS CONVERSION FOR Duromax XP8500EKIT WILL ALLOW YOUR ENGINE TO RUN ON LOW PRESSURE PROPANE,LOW PRESSURE NATURAL GAS OR GASOLINE UNIQUE VENTURI DESIGN MEANS NO MODIFICATION REQUIRED FOR MOST INSTALLATIONS MAXIMUM INLET PRESSURE: 13.86" WC (0.5psi) Benefits of alternative fuelGenerally cheaper than gasoline and dieselClean fuel, low impact on the environment and your engine (low carbon, air/engine stay clean)Alternative fuels have an unlimited shelf life and will not gum up or degrade componentsFuel components are built for long life and are easy to maintain or rebuild NOTE: MODIFICATION MAY BE NECESSARY ON SOME UNITS,CONTACT US IF YOU WOULD LIKE TO CHECK BEFORE PURCHASE FREE SHIPPING TO THE LOWER 48 STATES-Be sure to add me to your favorites list! Check out my other items!Sign up for PayPal; the fast, easy, and secure way to pay online.We have thousands of parts in stock, if you do not see the part you need!Feel free to ask us about conversion kits for almost anything including trucks, cars, generators, tractors, boats, motorcycles, RVs etc. We can build a kit to convert almost any engine! WARNING:This product can expose you to chemicals including Lead and lead compounds, which are knownto the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov. WARNING: This product can expose you to chemicals including lead and lead compounds, which are known to the state of California to cause cancer. www.P65Warnings.ca.gov. WARNING: These products contain a chemical known to the state of California to cause cancer and birth defects or reproductive harm. www.P65Warnings.ca.gov. ***NOTE***, DUE TO AVAILABILITY, THE KIT MAY COME WITH A DIFFERENT BRAND REGULATOR INSTEAD OF THE GARRETSON AS SHOWN***